Idiom of the day :- The fat is in the fire

Usage, examples and definition of the Idiom :-

Putting fat near an open flame is dangerous for it can easily ignite and cause a serious fire. That’s the idea behind this idioms, which refers to the start of something troublesome or dangerous. ‘Someone has stolen our food supply !’ Max cried. ‘The fat is in the fire unless we can get back to our camp before it starts to snow !’